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<a name="spirit.what_s_new.spirit_2_5_4"></a><a class="link" href="spirit_2_5_4.html" title="Spirit V2.5.4">Spirit V2.5.4</a>
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        <span class="phrase"><a name="spirit.what_s_new.spirit_2_5_4.what_s_changed_from_v2_5_3__boost_v1_50_0__to_v2_5_4__boost_v1_61_0_"></a></span><a class="link" href="spirit_2_5_4.html#spirit.what_s_new.spirit_2_5_4.what_s_changed_from_v2_5_3__boost_v1_50_0__to_v2_5_4__boost_v1_61_0_">What's
        changed from V2.5.3 (Boost V1.50.0) to V2.5.4 (Boost V1.61.0)</a>
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            Phoenix V2 was completely removed in Boost V1.56.
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            Introduced the new expect parser directive (see <a class="link" href="../qi/reference/directive/expect.html" title="Expectation Directive (expect[])"><code class="computeroutput"><span class="identifier">expect</span></code></a>) in addition to the expecation
            operator (see <a class="link" href="../qi/reference/operator/expect.html" title="Expectation Operator (a &gt; b)">Expectation
            operator</a>).
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<td align="right"><div class="copyright-footer">Copyright © 2001-2011 Joel de Guzman, Hartmut Kaiser<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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